An excerpt from the Preface...

After the conquest of the South Pole by Amundsen, who, by a narrow margin of days only, was in advance of the British Expedition under Scott, there remained but one great main object of Antarctic journeyings—the crossing of the South Polar continent from sea to sea.

When I returned from the Nimrod Expedition on which we had to turn back from our attempt to plant the British flag on the South Pole, being beaten by stress of circumstances within ninety-seven miles of our goal, my mind turned to the crossing of the continent, for I was morally certain that either Amundsen or Scott would reach the Pole on our own route or a parallel one. After hearing of the Norwegian success I began to make preparations to start a last great journey—so that the first crossing of the last continent should be achieved by a British Expedition.

We failed in this object, but the story of our attempt is the subject for the following pages, and I think that though failure in the actual accomplishment must be recorded, there are chapters in this book of high adventure, strenuous days, lonely nights, unique experiences, and, above all, records of unflinching determination, supreme loyalty, and generous self-sacrifice on the part of my men which, even in these days that have witnessed the sacrifices of nations and regardlessness of self on the part of individuals, still will be of interest to readers who now turn gladly from the red horror of war and the strain of the last five years to read, perhaps with more understanding minds, the tale of the White Warfare of the South. The struggles, the disappointments, and the endurance of this small party of Britishers, hidden away for nearly two years in the fastnesses of the Polar ice, striving to carry out the ordained task and ignorant of the crises through which the world was passing, make a story which is unique in the history of Antarctic exploration....

Endurance was the three-masted barquentine in which Sir Ernest Shackleton and a crew of 27 men sailed for the Antarctic on the 1914–1917 Imperial Trans-Antarctic Expedition. The ship, originally named Polaris, was built at Framnæs shipyard and launched in 1912 from Sandefjord in Norway. After her commissioners could no longer pay the shipyard, the ship was bought by Shackleton in January 1914 for the expedition, which would be her first voyage. A year later, she became trapped in pack ice and finally sank in the Weddell Sea off Antarctica on 21 November 1915. All of the crew survived her sinking and were eventually rescued in 1916 after using the ship's boats to travel to Elephant Island and Shackleton, the ship's captain Frank Worsley, and four others made a voyage to seek help.

https://en.wikipedia.org/wiki/Endurance_(1912_ship)

Fast forward to 2022...After many unsuccessful attempts by various treasure hunters and expeditions to locate the wreck of Sir Ernest Shackleton’s ship Endurance, a group organised and funded by the Falklands Maritime Heritage Trust (FMHT) came into existence. The Endurance22 expedition brought together world-leading marine archaeologists, engineers, technicians, and sea-ice scientists on the S.A. Agulhas II, one of the largest and most modern polar research vessels in the world to locate, survey and film the wreck of the Endurance.

Because Captain Worsley took detailed measurements of the location using a sextant and recorded it in his diary, the Endurance22 Expedition used SAAB Sabertooth underwater vehicles to search for the wreck. These hybrid vehicles combine the attributes of a Remote Operating Vehicle (ROV) – always linked to the surface – and an Autonomous Underwater Vehicle (AUV) – capable of operating without such a link. 

In March 2022, the Endurance was found beneath the Weddell Sea after 107 years...

https://endurance22.org/